Time allowed: three
Hours maximum
Marks: 200
Candidates should attempt questions 1 and 5 which are
compulsory, and Any Three of the following questions selecting at least ONE
question from each section.
SECTION A
1. Answer
any four of the following in about 150 words each:
(a)
Discuss merits and demerits of mass selection. Name
crops in which this method has been successfully applied.
(b)
Differentiate between incompatibility and sterility.
Name crops in which any other of the two systems has been noticed.
(c)
Whether plant propagation and vegetative reproduction
are similar or differ with each other? Elaborate your answer.
(d)
Define bio-technology. Give its role in plant breeding.
Name fruit crops in which this technology has been successfully used.
(e)
Explain cell organelles giving their function
separately.
2.
(a) define cultivators, clone, inhibition, imbibitions
and crossing –over
(b) Describe factors that
affect photosynthesis in plants.
Give aerobic and anaerobic respiration in
plants. In case of failure of this mechanism, what would happen?
3.
Write short notes on the following in about 150
words each:
(a)
Methods of breeding in self-pollinated crops
(b)
Integrated pest and disease management
(c)
Polyploidy
(d)
Handling and marketing problems of fruit crops
4.
(a) Define mutations. Do these occur in nature? How
are they important in creating variability?
(b) Give cultural
requirements of tomato crop in relation to:
(i)
Nursery bed preparation
(ii)
Method of
transplanting
(iii)
Fertilizer (NPK) requirement per hectare
(iv)
No. of irrigations required
(v)
Fruit yield per hectare
(a)
Discuss the tomato verities recommended for
sowing with yield potential
(b)
Do you feel that study of plant physiology is
essential for developing forests? Elaborate your answer.
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